Conveyance seat

Abstract

Provided is a conveyance seat including a pelvis support member of which a state or the like is adjusted. The conveyance seat includes the pelvis support member configured to support a portion of an occupant's body where a pelvis is positioned and lumbar supports configured to move the pelvis support member. The pelvis support member includes a seat back side support portion positioned behind a back portion of the occupant, a seat cushion side support portion positioned below buttocks of the occupant, and a connection portion that connects the seat back side support portion and the seat cushion side support portion. The lumbar supports are configured to move the pelvis support member so that a position of at least one of the seat back side support portion, the seat cushion side support portion, and the connection portion is changed with respect to the portion where the pelvis is positioned.

What is claimed is: 
     
       1. A seating device adjustment unit comprising:
 a seating device having a seat back and a seat cushion; 
 a pelvis support member arranged in the seating device and configured to support a portion of an occupant's body where a pelvis of the occupant is positioned; 
 an electronic control unit; 
 a kneading unit configured to perform a kneading operation, and 
 a movable unit configured to operate the kneading unit, wherein: 
 the electronic control unit is configured to control the movable unit in accordance with one mode selected from a plurality of control modes, 
 the plurality of control modes includes a first pelvis correction mode and a second pelvis correction mode, and 
 when the second pelvis correction mode is selected, the electronic control unit is configured to control the movable unit to operate the kneading unit to perform a kneading operation before controlling the pelvis support member to move. 
 
     
     
       2. The seating device adjustment unit according to  claim 1 , wherein:
 the kneading unit comprises a kneading element that is arranged at a position corresponding to a gluteus maximus in a back portion of the occupant. 
 
     
     
       3. The seating device adjustment unit according to  claim 1 , wherein:
 the kneading unit comprises a kneading element that is arranged at a position corresponding to a lower femoral region in a back portion of the occupant. 
 
     
     
       4. The seating device adjustment unit according to  claim 1 , wherein:
 the kneading unit comprises a kneading element that is arranged at a position corresponding to a region below and behind a knee of the occupant. 
 
     
     
       5. The seating device adjustment unit according to  claim 1 , wherein:
 the kneading unit is arranged in front of the pelvis support member in a front to back direction of the seating device. 
 
     
     
       6. The seating device adjustment unit according to  claim 5 , wherein:
 the seat cushion comprises a central region and an outer region that is an outer side of the central region in a width direction of the seat cushion; and 
 the kneading unit is arranged in the central region of the seat cushion. 
 
     
     
       7. The seating device adjustment unit according to  claim 1 , wherein:
 the pelvis support member comprises a notch at a central portion of the pelvis support member in a width direction of the seating device; and 
 the kneading unit is arranged at a position that does not overlap with the notch in a front to back direction of the seating device. 
 
     
     
       8. The seating device adjustment unit according to  claim 1 , wherein:
 the kneading unit includes a first kneading element and a second kneading element; 
 the first kneading element is arranged at a position that overlaps with the pelvis support member in an up to down direction; and 
 the second kneading element is arranged at a position that does not overlap with the pelvis support member in the up to down direction. 
 
     
     
       9. The seating device adjustment unit according to  claim 8 , wherein:
 a width of the first kneading element in a width direction of the seating device is larger than a width of the second kneading element in the width direction of the seating device, 
 the first kneading element is arranged at a position corresponding to a lower femoral region in a back portion of the occupant, and 
 the second kneading element is arranged at a position corresponding to a region below and behind a knee of the occupant. 
 
     
     
       10. The seating device adjustment unit according to  claim 1 , wherein:
 the kneading unit includes a plurality of kneading elements; and 
 the electronic control unit is configured to control the plurality of kneading elements to be moved simultaneously. 
 
     
     
       11. The seating device adjustment unit according to  claim 1 , further comprising:
 an air bag that is expandable and configured to move the pelvis support member. 
 
     
     
       12. The seating device adjustment unit according to  claim 11 , wherein:
 the kneading unit is arranged in front of the air bag in a front to back direction of the seating device. 
 
     
     
       13. A vehicle seat comprising the seating device adjustment unit according to  claim 1 . 
     
     
       14. The seating device adjustment unit according to  claim 1 , wherein:
 the plurality of control modes includes a forcible stop mode for forcibly terminating kneading operation. 
 
     
     
       15. A seating device adjustment unit comprising:
 a seating device having a seat back and a seat cushion; 
 a pelvis support member arranged in the seating device and configured to support a portion of an occupant's body where a pelvis of the occupant is positioned; 
 an electronic control unit; and 
 a kneading unit configured to perform a kneading operation, wherein: 
 the electronic control unit is configured to control the kneading unit to perform a kneading operation before controlling the pelvis support member to move, 
 the pelvis support member comprises a notch at a central portion of the pelvis support member in a width direction of the seating device; and 
 the kneading unit is arranged at a position that does not overlap with the notch in a front to back direction of the seating device. 
 
     
     
       16. A method for controlling a seating device adjustment unit, the seating device adjustment unit comprises:
 a seating device having a seat back and a seat cushion; 
 a pelvis support member arranged in the seating device and configured to support a portion of an occupant's body where a pelvis of the occupant is positioned; 
 an electronic control unit; 
 a kneading unit configured to perform a kneading operation, and 
 a movable unit configured to operate the kneading unit, the method comprises: 
 controlling, by the electronic control unit, the movable unit in accordance with one mode selected from a plurality of control modes, wherein the plurality of control modes includes a first pelvis correction mode and a second pelvis correction mode, and 
 when the second pelvis correction mode is selected, controlling, by the electronic control unit, the movable unit to operate the kneading unit to perform a kneading operation before controlling the pelvis support member to move.